Takracetus was a primitive cetacean that lived approximately 45 million years ago. The type specimen (GSP-UM 3041) is a partial skull[1] though the literature mentions a second more complete specimen.[2]
Gingerich, Philip D.; Arif, Muhammad; Clyde, William C. (1995). "New Archaeocetes (Mammalia, Cetacea) from the middle Eocene Domanda Formation of the Sulaiman Range, Punjab (Pakistan)". Contributions from Museum of Paleontology, the University of Michigan. 29 (11): 291–330. hdl:2027.42/48650. OCLC34123868.